I need to figure out exactly what type of fabric I need to underline a sheer fabric for a blouse/top. The fashion fabric is a patterned poly/cotton crepe. The fabric has a very soft hand, so I don’t want anything that is going to change that. I’d like be able to wear the blouse/top without a cami under it, so I only want to underline the front & back. I thought about using a VERY light weight, nude colored knit, something with a little give, but don’t know what it is called or where to find it. There are 2 JoAnn’s within easy driving distance, but of course, they don’t carry anything remotely like what I’m thinking of. Can someone please help?